It may be normal. I had some black appearing along the jaw line of this fellow. But it's starting to blend to a dark brown.Hey lads,
I’ve had my meerschaum for just over 3 weeks now. I smoke about 7-10 bowls in it a day and last week these black spots appeared.
This has now spread as you can see in the 2nd picture.
My friends are telling me there is a leak or bleed and this is not normal colouring. It’s my first meer so I have no idea.
Or cap the chamber tightly with your palm and try blowing through it.See if you can suck air through that divot. ?
My first guess is like Warren said. Meerschaum is a fairly heterogeneous material, with some bits staying white while other areas color darker. Could just be different in composition in that area.